Marukin marubi no kintamashii maki (1985)

Koji Tadokoro, the manager of a hot bento shop, lives an ordinary life with his girlfriend Noriko Kinoshita, who works at a nearby supermarket and loves sex. Tonight they are having sex, as if they are going to try to break the Guinness World Record, when suddenly the window opens and Nakagawa, a middle school classmate, appears. Shimizu, who had become a film director, has died. The two go to the funeral, and on the way home they pass a man accompanied by a beautiful woman. That man is none other than his childhood friend, Kimio Kondo. Kimio is the epitome of a money man. He is a doctor working at a university hospital, and on the side, he writes new music lyrics and is popular with nurses and popular singers. The three are excited to see each other again after a long time, and plan a class reunion trip to Kimio's luxurious mansion...